﴿ وَإِذْ أَسَرَّ ٱلنَّبِىُّ إِلَىٰ بَعْضِ أَزْوَٰجِهِۦ حَدِيثًۭا فَلَمَّا نَبَّأَتْ بِهِۦ وَأَظْهَرَهُ ٱللَّهُ عَلَيْهِ عَرَّفَ بَعْضَهُۥ وَأَعْرَضَ عَنۢ بَعْضٍۢ ۖ فَلَمَّا نَبَّأَهَا بِهِۦ قَالَتْ مَنْ أَنۢبَأَكَ هَٰذَا ۖ قَالَ نَبَّأَنِىَ ٱلْعَلِيمُ ٱلْخَبِيرُ ﴾

“And lo! [It so happened that] the Prophet told something in confidence to one of his wives; and when she thereupon divulged it, and God made this known to him, he acquainted [others] with some of it and passed over some of it. And as soon as he let her know it, she asked, "Who has told thee this?" - [to which] he replied, "The All-Knowing, the All-Aware has told me."”

Please check ayah 66:5 for complete tafsir.